| Title |
Effects of Reserve Space of Anaerobic Fluidized Bed Biofilm Reactor on Wastewater Treatment Efficiency |
| Authors |
배민수 ; 박수영 ; 범봉수 ; 조광명 ( Min Su Bae ; Soo Young Park ; Bong Su Bum ; Kwang Myeung Cho ) |
| Abstract |
When an anaerobic activated carbon fluidized bed biofilm reactor is employed for wastewater treatment, a reserve space is required above the fluidized bed to prevent the loss of media, and wastewater treatment efficiency may be affected by the attached and suspended biomass in the reserve space. Therefore, experiments were performed by increasing stepwise the organic loading rates(OLR) of two reactors with and without a reserve space from 2 to 16㎏ COD/㎥-day. Results of the research showed that treatment efficiencies of the reactors were almost similar until the OLR reached 8㎏ COD/㎥-day. At higher OLRs, however, the effluent quality of the reactor without a reserve space was worse than the one with a reserve space. This is due to sloughing-off and washing-out of the biomass in the reactor without a reserve space, but the reactor with a reserve space maintains more biomass because of the attached growth on the inside surface of the reserve space. Therefore, a reserve space for prevention of media loss in an anaerobic activated carbon fluidized bed biofilm reactor would provide an increase in treatment efficiency at high OLRs. |